The following information is taken from the Dictionary of the Older Scottish Tongue, available online at http://www.dsl.ac.uk/index.html. This is a work in progress.
| Spelling | Number | Dates & headers |
|---|---|---|
| Buchane | 3 | 1476 (chawmerlane); 1478 (brek); 1491 (betwis) |
| Bouchane | 1 | 1483 (chamerlanry) |
| Buchan | 1 | 1577 (brydal) |